MINING HAUL TRUCK SAFETY SYSTEMS!!

Friendly people of LinkedIn, this is a retired haul truck donated by Kumba Iron Ore in downtown Johannesburg. Note the front bumper - I can testify from my production days at Thabazimbi that this is a life saver. What other safety systems would you guys say is absolutely imperative on a haul truck to function safely and efficiently in the modern mine of today...?